GB0110572D0 - Smoke alarm - Google Patents
Smoke alarmInfo
- Publication number
- GB0110572D0 GB0110572D0 GB0110572A GB0110572A GB0110572D0 GB 0110572 D0 GB0110572 D0 GB 0110572D0 GB 0110572 A GB0110572 A GB 0110572A GB 0110572 A GB0110572 A GB 0110572A GB 0110572 D0 GB0110572 D0 GB 0110572D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- smoke alarm
- smoke
- alarm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
- G08B17/10—Actuation by presence of smoke or gases, e.g. automatic alarm devices for analysing flowing fluid materials by the use of optical means
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/16—Actuation by interference with mechanical vibrations in air or other fluid
- G08B13/1654—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems
- G08B13/1672—Actuation by interference with mechanical vibrations in air or other fluid using passive vibration detection systems using sonic detecting means, e.g. a microphone operating in the audio frequency range
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Detection Mechanisms (AREA)
- Alarm Systems (AREA)
- Fire Alarms (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0010375A GB0010375D0 (en) | 2000-04-29 | 2000-04-29 | Smoke alarm |
Publications (3)
Publication Number | Publication Date |
---|---|
GB0110572D0 true GB0110572D0 (en) | 2001-06-20 |
GB2367175A GB2367175A (en) | 2002-03-27 |
GB2367175B GB2367175B (en) | 2005-01-12 |
Family
ID=9890687
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0010375A Ceased GB0010375D0 (en) | 2000-04-29 | 2000-04-29 | Smoke alarm |
GB0110572A Expired - Fee Related GB2367175B (en) | 2000-04-29 | 2001-04-30 | Warning device |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB0010375A Ceased GB0010375D0 (en) | 2000-04-29 | 2000-04-29 | Smoke alarm |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB0010375D0 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2388693A (en) * | 2002-05-16 | 2003-11-19 | Phillip John Williams | Emergency exit indicator |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4207559A (en) * | 1977-09-26 | 1980-06-10 | Meyer Michael M | Alarm system with acoustically coupled transmitters and receiver |
US4189720A (en) * | 1977-10-07 | 1980-02-19 | Lott Thomas M | Repeater for smoke and similar alarms |
US4450436A (en) * | 1979-09-07 | 1984-05-22 | The Stoneleigh Trust | Acoustic alarm repeater system |
US4520503A (en) * | 1983-10-14 | 1985-05-28 | University Of New Mexico | Tone discrimination circuit |
US4897862A (en) * | 1988-05-27 | 1990-01-30 | Nec Corporation | Acoustic alarm detection system for telephone activation |
US4935952A (en) * | 1988-07-13 | 1990-06-19 | B-Warned, Inc. | Alarm-responsive apparatus and method |
GB8913552D0 (en) * | 1989-06-13 | 1989-08-02 | Emi Plc Thorn | Smoke alarm systems |
GB2266800B (en) * | 1992-05-02 | 1996-02-28 | Tarquin Andrew Stehle | External audible fire and intruder warning alarm system |
-
2000
- 2000-04-29 GB GB0010375A patent/GB0010375D0/en not_active Ceased
-
2001
- 2001-04-30 GB GB0110572A patent/GB2367175B/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
GB2367175A (en) | 2002-03-27 |
GB0010375D0 (en) | 2000-06-14 |
GB2367175B (en) | 2005-01-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20120430 |